CAJ | 학술논문

以偏苯三酸(TLA)为第一配体,邻菲咯啉(phen)为第二配体,合成了铕偏苯三酸邻菲咯啉及铕镧系列发光配合物Eu_(1-x)La_x(TLA)phen(x=0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8).通过红外光谱、TG-DTG和扫描电子显微镜对配合物进行了表征;通过荧光光谱分析,探讨了掺杂荧光惰性离子对三元配合物的发光性能的影响.结果表明:该系列配合物均表现为强的Eu~(3+)的特征荧光,La~(3+)的掺入能增强配合物的的荧光强度,但发射峰的位置基本上没有变化,其中~5D_0→~7F_1和~5D_0→~7F_2的跃迁发射较强,所有掺杂配合物的荧光强度都大于未掺杂的配合物的荧光强度.
이편분삼산(TLA)위제일배체,린비각람(phen)위제이배체,합성료유편분삼산린비각람급유란계렬발광배합물Eu_(1-x)La_x(TLA)phen(x=0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8).통과홍외광보、TG-DTG화소묘전자현미경대배합물진행료표정;통과형광광보분석,탐토료참잡형광타성리자대삼원배합물적발광성능적영향.결과표명:해계렬배합물균표현위강적Eu~(3+)적특정형광,La~(3+)적참입능증강배합물적적형광강도,단발사봉적위치기본상몰유변화,기중~5D_0→~7F_1화~5D_0→~7F_2적약천발사교강,소유참잡배합물적형광강도도대우미참잡적배합물적형광강도.
The rare-earth complexes with aromatic carboxylic acids are a kind of good luminous materials because of the good light-emitting singleness, high luminous intensity and a high quantum efficiency. In recent years, more and more attention has been paid to the fluorescence properties of these complexes. The research showed that addition of the non-fluorescent rare-earth ions can enhance the fluorescence intensity of rare-earth complexes. The trimellitic acid, which has a variety of forms of coordination, is a good performance of the organic ligand. A lot of researches about the complexes of europium with trimellitic acid has been reported, however the study of europium-lanthanum complexes with trimellitic acid and 1,10-phenanthroline has been seldom reported. In this study, the series of solid complexes Eu_(1-x)La_x(TLA)phen(x=0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8) were obtained by the trimellitic acid, 1,10-phennanthroline and mixed rare earth chloride of EuCl_3 and LaCl_3 in CH_3CH_2OH solution. These complexes were characterized by IR spectrum, TG-DTG and SEM. The IR spectrum showed that the oxygen atoms of carboxylate and the nitrogen atoms of phen coordinate with RE~(3+), and these complexes have similar structure. The TG-DTG analysis showed that these complexes are thermally stable. The fluorescence properties of these complexes were also studied. The results indicated that the complexes can emit intense characteristic fluorescence from europium ion. The fluorescence intensities of europium ions are sensitized by the doping of lanthanum ions and the intensity of fluorescence is the best when n(Eu~(3+)):n(La~(3+))=0.5:0.5, at same time the position of the emission peak does not changed.